The distribution of scores on the SAT test is approximately normal with μ = 500 and σ = 100. a. What proportion of the population have SAT scores above 575? b. What proportion of the population have SAT scores below 520? c. What is the minimum SAT score needed to be in the highest 30% of the population? d. What SAT score separates the top 65% from the rest of the distribution?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 26PFA
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The distribution of scores on the SAT test is approximately normal with μ = 500
and σ = 100.
a. What proportion of the population have SAT scores above 575?
b. What proportion of the population have SAT scores below 520?
c. What is the minimum SAT score needed to be in the highest 30% of the
population?
d. What SAT score separates the top 65% from the rest of the distribution?

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